Effects of Different Stages Pinching of Bearing Branch on Fruit -set and Yield in New Variety of Vitis amurensis Rupr .“Xuelanhong”
Different stages of bearing branch pinching was studied ,we employed the new variety of Vitis amurensis Rupr .“Xuelanhong”as mate-rials .The results showed that different stages of pinching treatment had significant effects on fruit set ,fruit weight ,yield and downy mildew resis-tance .And the best effects of pinching treatment were flowering before the seventh day and tenth day ,these fruits set were 37.2% and 36.9%respectively ,which were better than other treatments ,and so did these fruit weight ,yield and downy mildew resistance .Therefore ,the best pinching stage for Vitis amurensis Rupr .“Xuelanhong”was flowering before the seventh to tenth day .